<template>
  <li @mouseenter="mouseenterHandle" @mouseleave="mouseleaveHandle" :class="isActive?'active':''">
          <label>
            <input type="checkbox" :checked='done' @change="changeHandle(id,$event)"/>
            <span>{{thing}}</span>
          </label>
          <button class="btn btn-danger" @click='deleteHandle(id)'>删除</button>
        </li>
</template>

<script>
export default {
    name:'Item',
    props:['id','thing','done','deleteHandle','changeHandle'],
    data(){
     return {
       isActive:false,
     }
    },
    methods:{
      mouseenterHandle(){
        this.isActive=true;
      },
      mouseleaveHandle(){
        this.isActive=false;
      },
    }
}
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
li.active{
  background-color: #ddd;
} 
li.active button{
  display: block;
}
</style>